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A long tube of length /= 25 cm and diame...

A long tube of length /= 25 cm and diameter equal to 2 cm is taken and at its mouth air is blown as shown in figure. The sound emitted by tube will have all the frequencies of the group (velocity of sound = 330 m/s )

A

660, 1320, 2640 Hz

B

660, 1000, 3300 Hz

C

302, 684, 1320 Hz

D

330, 990, 1690 Hz

Text Solution

Verified by Experts

The correct Answer is:
A

`n=v/(2l)=(330)/(2xx25)xx100=660Hz`
`" "n_(1)=2xx660=1320Hz`
`" "n_(2)=3xx660=2460Hz`
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